The International GNSS Service (IGS), formerly the International GPS Service, is a voluntary federation of more than 200 worldwide agencies that pool resources and permanent GPS & GLONASS station data to generate precise GPS & GLONASS products. The IGS is committed to providing the highest quality data and products as the standard for Global Navigation Satellite Systems (GNSS) in support of Earth science research, multidisciplinary applications, and education. Currently the IGS includes two GNSS, GPS and the Russian GLONASS, and intends to incorporate future GNSS. You can think of the IGS as the highest-precision international civilian GPS community.

This Data Center is a service of the Bundesamt für Kartographie und Geodäsie (BKG) (Federal Agency of Cartography and Geodesy).The GDC supports international projects related to permanently operating GNSS receivers. Check the availability of observations, recent behaviour of observing sites and retrieve the observations or analysis results.

This web site is part of the EPN (EUREF Permanent Network) Central Bureau Information System, providing both EPN member organizations and the public with information about the EPN organization, the EPN network of stations, and EPN data & products.